package com.xyh.authserver.controller;

import com.alibaba.fastjson.TypeReference;
import com.xyh.authserver.feign.MemberFeignService;
import com.xyh.authserver.feign.ThirdPartFeignService;
import com.xyh.authserver.vo.UserLoginVo;
import com.xyh.authserver.vo.UserRegistVo;
import com.xyh.common.constant.AuthServerConstant;
import com.xyh.common.exception.BizCodeEnum;
import com.xyh.common.utils.R;
import com.xyh.common.vo.MemberRespVo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.util.StringUtils;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import javax.validation.Valid;
import java.util.HashMap;
import java.util.Map;
import java.util.UUID;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;

@Controller
public class LoginController {

    @Autowired
    ThirdPartFeignService thirdPartFeignService;

    @Autowired
    StringRedisTemplate redisTemplate;

    @Autowired
    MemberFeignService memberFeignService;

    @ResponseBody
    @GetMapping("/sms/sendcode")
    public R sendCode(@RequestParam("phone")String phone){
        //TODO 1.接口防刷
        String redisCode = redisTemplate.opsForValue().get(AuthServerConstant.SMS_CODE_CACHE_PREFIX + phone);
        if (!StringUtils.isEmpty(redisCode)) {
            long l = Long.parseLong(redisCode.split("_")[1]);
            if (System.currentTimeMillis() - l < 60000) {
                //60s内不能再发
                return R.error(BizCodeEnum.SMS_CODE_EXCEPTION.getCode(), BizCodeEnum.SMS_CODE_EXCEPTION.getMsg());
            }
        }
        //2.验证码的再次校验，（存入redis）
        String code = UUID.randomUUID().toString().substring(0, 5);
        String str = code+"_"+System.currentTimeMillis();
        //redis缓存验证码，防止同一个手机号在60s内再次发送验证码
        redisTemplate.opsForValue().set(AuthServerConstant.SMS_CODE_CACHE_PREFIX+phone,str,10, TimeUnit.MINUTES);

        thirdPartFeignService.sendCode(phone,code);
        return R.ok();
    }
    @PostMapping("/regist")
    public String regist(@Valid UserRegistVo vo, BindingResult result, RedirectAttributes attributes){
        if (result.hasErrors()){
            Map<String, String> errors = result.getFieldErrors().stream().collect(Collectors.toMap(FieldError::getField, FieldError::getDefaultMessage));
            attributes.addFlashAttribute("errors",errors);
            //校验出错，转发到注册页面
            return "redirect:http://auth.gulimall.com/reg.html";
        }
        //1.校验验证码
        String code = vo.getCode();

        String s = redisTemplate.opsForValue().get(AuthServerConstant.SMS_CODE_CACHE_PREFIX + vo.getPhone());
        if (!StringUtils.isEmpty(s)){
            if (code.equals(s.split("_")[0]) || code.equals("11111")){    //11111是为了防止短信服务失效的备用验证码
                //删除验证码,令牌机制
                redisTemplate.delete(AuthServerConstant.SMS_CODE_CACHE_PREFIX + vo.getPhone());
                //验证码通过，真正的注册，调用远程服务进行注册
                R r = memberFeignService.regist(vo);
                if (r.getCode() == 0){
                    //成功
                    return "redirect:http://auth.gulimall.com/login.html";
                }else {
                    Map<Object, Object> errors = new HashMap<>();
                    errors.put("msg",r.getData("msg",new TypeReference<String>(){}));
                    attributes.addFlashAttribute("errors",errors);
                    return "redirect:http://auth.gulimall.com/reg.html";
                }
            }else {
                Map<String, String> errors = new HashMap<>();
                errors.put("code","验证码错误");
                attributes.addFlashAttribute("errors",errors);
                //校验出错，转发到注册页面
                return "redirect:http://auth.gulimall.com/reg.html";
            }
        }else {
            if (code.equals("11111")){  //无敌验证码
                R r = memberFeignService.regist(vo);
                if (r.getCode() == 0) {
                    return "redirect:http://auth.gulimall.com/login.html";
                }
            }
            Map<String, String> errors = new HashMap<>();
            errors.put("code","验证码错误");
            attributes.addFlashAttribute("errors",errors);
            //校验出错，转发到注册页面
            return "redirect:http://auth.gulimall.com/reg.html";
        }

    }

    @PostMapping("/login")
    public String login(UserLoginVo vo, RedirectAttributes attributes, HttpSession session){
        //远程登录
        R r = memberFeignService.login(vo);
        if (r.getCode() == 0){
            //成功
            MemberRespVo data = r.getData("data", new TypeReference<MemberRespVo>() {
            });
            session.setAttribute(AuthServerConstant.LOGIN_USER,data);
            return "redirect:http://gulimall.com";
        }else {
            Map<String, String> errors = new HashMap<>();
            errors.put("msg",r.getData("msg",new TypeReference<String>(){}));
            attributes.addFlashAttribute("errors",errors);
            return "redirect:http://auth.gulimall.com/login.html";
        }

    }

    @GetMapping("/login.html")
    public String loginPage(HttpSession session){
        Object attribute = session.getAttribute(AuthServerConstant.LOGIN_USER);
        if (attribute == null){
            //没登录
            return "login";
        }else {
            return "redirect:http://gulimall.com";
        }
    }

}
